How to control the humidity of indoor pools

Written by jophiel aurora
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How to control the humidity of indoor pools
Consider a good ventilation system for your indoor pool enclosure. (pool with a mirror ceiling image by terex from

Having an indoor pool can be fun and convenient if you desire privacy and protection from the cold air during winter, and from falling leaves dirtying your water in fall. Although the benefits of having an indoor pool might be worth it, controlling the humidity in your indoor pool area is a little complex and can be challenging. To protect your pool enclosure from being damaged by excessive humidity and condensation, you need to follow certain procedures for indoor pools.

Skill level:

Things you need

  • Dehumidifier/mechanical ventilation system

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  1. 1

    Measure the size of your pool and pool area in square feet to help you decide on a mechanical ventilation system. The larger the indoor pool and enclosure area, more cool air and circulation is needed to ventilate the area.

  2. 2

    Take steps to prevent condensation. Not properly dehumidifying an indoor pool room can cause warping wood, mould, mildew, rust and other problems. Build or install doors, extra windows, skylights and other openings to prevent condensation from forming on walls, metal, doors and other exposed surfaces that can be damaged by excess water.

  3. 3

    Keep the air cool in the indoor pool area. Cool air holds less moisture. Know your pool area's dew point temperature, the temperature at which something condenses or begin to sweat.

  4. 4

    Design an air handling system for your indoor pool room so that surfaces within the enclosed area do not reach the dew point temperature. Install a proper dehumidifier unit for indoor pools in the enclosure. You need to know the square feet of the room, pool size and the type of construction materials used in the room to determine the power of the unit needed to get the job done.

  5. 5

    Use a pool cover regularly. When your pool cover is used, maintain a ventilation rate of 1 ACH (one air change per hour) to maintain reasonable humidity levels.

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